Duplex riveting machine



' Y- 1932. A. R. HAVENER DUPLEX RIVETING MACHINE Filed Dec. 24, 1931 3 Shets-Sheet fii/vemtof'l firULu/r kirk/vertex? Nov. 1, 1932. A. R. HA VENER DUPLEX RIVETING MACHINE 5 Sheets-Sheet 2 Filed Dec. 24, 1931 III. IL

II. II. ll llrllr I If 9 Nov.

A. R. HAVENER 1,885,347

DUPLEX RIVETING MACHINE F iled Dec. 24. 1931 w 3 Sheets-Sheet 3 M gr my fatented Nov. 1, 1932 UNWEID st-Ares ARTHUR R. HAVENER, or WAYLAND, MASSACHUSETTS, nssreivo n' 'ro' Jonson Ii. rqomson MANUFACTURING 00,0 WALTHAM, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS nurLE'x. nivnrme MACHINE Application filed December 24; 1931, Serial 1%. 582,962;

This inventionrelates to a riveting machine adapted to simultaneously feed and simultaneously drive and clinch-apair of rivets;

The object of the invention is to provide a rivet driver and holder which can. be detached from the machine as a unit, and another rivet driver and holder inserted in lieu thereof in which the driving stems are a different distance apart from those in the rivet driver which was taken out, so that the ma chine can be adapted, bysimply changing the rivet driver and holder andthe anvil holder, to drive rivets different distances apart.

The object of the invention is further to provide 'a rivet driver and holder in which,

when the change from one-unit'to another is made, there is no change in any of the other parts of the machine, the raceways feeding the rivets to opposite sides of the holder, which holder has embodied therein guidew-ays to guide the rivets from thB lOWGI' GIIClS of the raceways to the position which they should occupy inthe rivet holder, namely, in alignment with the driver stems.

Another object of the-inventionis to providea rivet driver and holder in a riveting machine in which the holder for the rivets is held against downward movement until" the dri ri-ng Steins ofthe'dr-iver contact with the heads of the rivets which are positioned inthe holder.

Another object of the invention is to so mount the anvils upon the frame of the ma chine that they may be removed and another pair of anvils substituted therefor to align with the driver stems of a new driver and holder. r

The invention consists in a riveting ma:-

u chine of the character set forth in the follow.-

in specification and particularly pointed out- 'Referring tothe drawings Fig. 1 isa side elevation-of a riveting machine embodying my invention showing the same broken away.

Fig; 2 is-a front elevation on an enlarged v, scale-of a port-ion of the'rhe'ad: ofithe machine, particularly illustrating. the rivet driver and bolder and theanvils and the-detachable plate upon which they are mounted, the raceways being broken-away.

Fig. 3 is a sectional elevation taken on line 3-3, Fig. 2, and: broken away; i

Fig. 4- isa detail front elevat'ion of the rivet driver and holder.

Fig. his a sectional plan taken on line 5c5, Fig. 4,.and illustrating the rivet holder.

Fig.6 is. a front-elevation: of the rear half ofthe rivetholder Showing a port-ion of: the raceways and of the driver Stems in connection: therewith and apair of ri-vetsshown'in dotted lines in the positions 'assumed thereby when they are delivered to the holder from the'raceways, which are shownpartly in section,

F ig; 7 is a front elevation similar to Fig. 6, butillustrating the drivers as having been moved down from-the position illustrated in Fig; :61 and contacting with the heads of the rivets in the holder K Like numerals refer to like eral views of the drawings.

Inithedrawings,10 is the frame of the machine-mounted on a column 11 and-having an arnrl- Q fast theretoand forming'a part thereof witha plate l3'fastene'd thereto by Screws parts in the sev- 75 :14, said plate constitutinga support for a'pair .offanvils 1 5; A driving shaft lfi is rotatably is connected byaconnecting'rod 21 to a' pair of links 22 and 23-bya pin 24; The link- 22 1s pi-vota'llyconnected: at 25' to a head 26"f'a'st, to the frame of the m'achineand constituting in effect a portion thereof. The other link 23 is pivotally connected by a pin 27 to a driver slide 28 mounted to a slide in ways 29 on the head 26 of the machine. The head 26 is fastened to the frame of the machine by screws 30.

A rivet driver 31, consisting preferably of a block rectangular in cross section with driver stems 32 projecting into the lower end thereof and fastened thereto by screws 33, is positioned in a recess 34 in the lower end of the slide 28 and is held clamped in said recess by a clamp bar 35 which extends thereacross and is fastened by screws 36 to the slide 34,

so that by removing the screws 36 and the clamp bar 35 the rivet driver with the parts mounted thereon, and hereinafter fully described, may be removed from the head of the machine and another rivet driver with said parts thereon substituted therefor.

A rivet holder 37 is slidably mounted on the rivet driver 31and is frictionally p0si tioned thereon, the holder consisting as a whole of two flat arms 38 whichrare oppositely disposed to each other. Upon the inner face of each of the arms 38 respectively is fastened a plate 40. The plates 40 are recessed on their inner faces to form shank receiving grooves 41, the said plates having spaces 42 between their adjacent faces forming entrances to the shank receiving grooves 41 for the shanks of the rivets as they pass from the raceways into the shank receiving grooves. The plates are beveled at 43 at the upperends of the shank receiving grooves 41 in order toreceive and support the heads of the rivets. The adjacent faces of the plates 40 are also provided with upwardly inclined grooves 44 leading from the lower ends of the raceways 45 to the upper ends of the shank receiving grooves 41 and constituting guideways for the heads of the rivets as they pass from the raceways 45 into the shank receiving grooves in the holder 37. The central portions 46 of the adjacent faces of the plates 40 abut against each other along the line 47, Fig. 5. The lower ends of the shank receiving grooves 41 are of frusto-conical form at 48 and terminate in reduced cylindrical openings 49. These shank receiving grooves and the reduced cylindrical portions 49 thereof as well as the driver stems 32 are in alignment with the anvils 15, so that when the rivets are driven downwardly in the holder, as hereinafter described by thedriver stems, the shanks of the rivets will be forced through the cylindrically formed openings 49 and through the work and clinched against the anvils 15.

The arms 38 are slidably mounted on the driver 31 in ways 50, the upper ends of these arms being bevelled at 51, see Fig. 3. The arms 38 are frictionally held positioned in the guideways 50 by yielding means comprising a pair of oppositely disposed flat springs 52 which are fastened by screws 53 to the driver 31 and spaced therefrom by a plate 54, the lower ends of the flat springs 52 being bevelled at 55 so that there is provided between the inner face of each of the springs 52 and the driver 31 a space 56, and the arms 38 are slidably mounted in this space 56 between the bottom of the guideways 50 and the inner face of the springs 52, the sides of the arms 38 being guided by the side faces of the guideways 50. The upper edges of the arms 38 are bevelled at 51 and the lower edges of the springs 52 are bevelled at 55 so as to aid in guiding the arms 38into the guideways 50 and thusthe holder plates 40 with their 'arms 38 may be readily removed from or placed on the driver 31. The upper ends of the arms 38 being preferably arcuate in shape, as illustrated in Fig. 4, the springs 52 press against the arms 38 so as to hold them frictionally positioned in their respective guideways.

The plates 40 have projections or ears 57 which, when the holder is in its uppermost position, abut against the lower ends of the raceways 45, thus accurately positioning the holder with relation to the raceways and the projections 57 thus constituting stops.

It is desirable that the rivet holder should not move downwardly to feed the rivets to the goods which are to be riveted until the lower ends of the stems 32 contact with the heads of the rivets. In order that there should be no danger of the rivets getting out of position in the shank receiving grooves 41 and to prevent the rivet holder from moving downwardly until the driver stems contact with the rivets therein, a pin 58 is provided in each of the plates 40. The head of the pin 58 projects through an orifice 59 provided in a lever 60 which consists of an arm 61, Figs. 2 and 3, the upper end of which is fastenedbyascrew 62to a. rocker arm 63 pivoted at 64 to thehead ofthe machine. A spring 65 is fastened by a. screw 66 to the head of the machine and bears against the arm 61 of the lever 60 so as to normally hold the arm in engagement with the head of the pin 58. One of the pins 58 is provided in each of the plates '40 so that these plates and the arms 38 are duplicates of each other and interchangeable. keep the plates 40 and the arms 38 at all times in the same positions longitudinally relatively to each other while allowing them to move toward and away from each other, a pin 67 is fast to one of said plates and projects into.

and is slid-able in the other, see Fig. 3. Rivets 68 are fed to the raceways 45 from a hopper 69 in a manner well known to those skilled in this art.

hereinbefore specifically and to some extent in general described. is as follows z Rotary motion is imparted to the pinion 18 by a pulley 70 fast to the shaft 16 and the pinion 18 imparts a rotary motion. to the gear 19, thus The general operation of the mechanism In order to l i Assumingthe 23areci roeatorrmotion is im arted to the.

driver'slide 28 and driver 31 with its driver stems 32-; i

parts to be in the relative positions.illustrated. in Fig; 6, the rivets 68 descendthe racewaysiii and 'the'heads of said rivetsslide: along guideways' lt in the holder pl'ates40 and com-e to rest in the position illustratedIin-dotted lines, Fig. 6,:with the headsof the rivets resting upon the ridges 43 and with the shanks .of' the rivets projecting downwardly into the shank receiving grooves 41. At this time the rivet holder 37 is locked against vertical movement by the pin 58 and the lever6'0, so that as the driver31 descends the rivet holder will, during the first-portion of this downward movement ofthe driver, remain stationary until the driver stems 32i contact withithe heads ofthe rivets 68 as they rest in the holder in the position illustrated in. dotted lines, Fig. 6. Further downward movement of the driver and stems causes'the rivets to be pushed downwardly in the-holder by the driver. stems 32until't'hey nil arrive at the positions illustrated in Fig. 7.

During this downward movement of the driver and the stems, the holder stands still, but upon arriving at the position illustrated in Fig. 7, the inclined edge 71 on the driver encounters the roundedsurface 7 2 on the arm 61v of the lever60and pushes the arm 61' outwardly causing the lever to rock on its pivot 64-until-the arm is disengaged from the pin 7 58' in-the plate 40 of the holder 37, whereupon the driver 31 and its stems 32moving further downwardly, carry with it the holder until the lower ends of the-plates LO-contact with. the material into :which the rivets are to be driven. At this time the rivet holder comes to a stop, and the arm's'38 slide upon the driver as it descends still further to drive the rivets into the material and out of the holder and rivet them against the anvils 15.

Upon the return movement of the driver and holder, the driver moves upwardly, to? gether with the holder, until the projections 57 upon the holder plates 40 engage the lower ends-of the'raceways 45, whereupon the holder comesto a stop and the arms 38 of said holder slide on the driver as it moves still further upwardly to the'position illustrated in F ig; 3. As soon as the driveris moved upwardly sufficiently to have the inclined face 71 thereof disengaged from the arm 61 of the lever 60, the said lever is moved back to the position illustrated in Fig. 3 by the spring and the holderxis then locked against vertical movement. A new pair of rivets is then fed to the holder from the raceways 45 and'the operation vhereinbefore described is repeated.

Iclaiin:

1. A riveting: machine having, in combination,.a:.slide', a rivet driver fast thereto, a rivet holderislidably mountedon said rivet driver,

an anvil in. alignment with said driver, mechanism to impart a reoiprocatory motion to said: slide toward. and away from said anvil, means: to friotionally retain the holder on.=-the' driver, and locking means to prevent the holderhfrom'. movingwhile the driveris in motion, whereby the holder is caused to slide on the driver; 1

2. A riveting machine having,in combination,.a;slide, a rivet driver fast thereto, a rivet holder slidably .mounted on said rivet driver, an anvil in alignment with said driver, mechanism to impart a'reciprocatory mo'- tion to said slide toward and away from said anvil, meanstofrictionally' retain the holder on-the driver, locking means to prevent the holder from moving while the driver is in motion, whereby the holder is caused to slide on the'driver, andmeans to release said locking' means to allow'the holder to move with the. driver. i i

3.v A rivetingmachine having, in combination, a slide,a.rivetldriver fast thereto, a rivet holder slidably mounted on said rivet dr-iver,.an anvil' in alignment with said driver, mechanism to impart a reciprocatory motion. tosaid slide toward and away from said anvil, means to frictionally retain the holder on the'driver, and'a lever pivotally mounted on the frame. of: said machine adapted to engage saidholder to prevent it from moving while the driver is in motion, whereby the holder is caused to slide on the driver.

. 4; A riveting machine having, in combina- .driver,zan anvil in.alignmentwith said driver,

mechanism to impart a reciprocatory motion to said slide toward and awayfrom said anvil, means to frictionally. retain the holder on the driver, and a lever pivotally mounted on the frame of said machine adapted to engage'saidholder to prevent it from moving while the driver is in motion, whereby the holder is caused to'slide on the driver, said lever being adapted to be engagedby'the driver'todisengage it from the holder to allow the holder to move with the driver.

5. A'rivetingmachine having, in combina tion, a slide, a rivet driver fast thereto, a

orifice, whereby the holder is held stationary and caused to slide on the driver while the latter is moving.

6. A riveting machine having, in combinarivet holder slidably mounted on said rivet driver, an anvil in alignment with said driv- Lin tion, a slide, a rivet driver fast thereto, a rivet holder slidably mounted on said rivet driver, an anvil in alignment with said driver, mechanism to impart a reciprocatory motion to said slide toward and away from said anvil, means to frictionally retain the holder on the driver, a spring-actuated lever pivotally mounted on the frame of said machine and provided with an orifice, and a projection on said holder adapted to project into said orifice, whereby the holder is held stationary and caused to slide on the driver while the latter is moving, said lever being adapted to be engaged by the driver and moved out of engagement with said projection to allow the holder to move with the driver.

7. A tool for driving rivets having, in combination, a rivet driver, a rivet holder comprising a pair of arms slidably disposed on opposite sides of said driver, a pair of oppositely disposed plates fast to said arms and adapted to hold a plurality of rivets'between them, yielding means adapted to press said arms against said driver, whereby said arms may be frictionally retained on said driver,

and a pin projecting from one of said plates into and slidable in the other, whereby said arms are prevented from longitudinal movement relatively to each other while movable toward and away from each other.

8. A tool for driving rivets having, in com bination, a rivet driver, a rivet holder comprising a pair of arms slidably disposed on opposite sides of said driver, a pair of oppositely disposed plates fastv to said arms and adapted to hold a rivet between them, a pair of flat springs fast to said driver and bearing against said arms, whereby the arms are frictiona-lly retained on the driver, and a pin projecting from one of said plates into and slidable in the other, whereby said plates and arms are prevented from longitudinal movement relatively to each other whilemovable toward and away from each other.

9. A tool for driving rivets having, in combination, a rivet driver, a rivet holder comprising a pair of arms slidably disposed on opposite sides of said rivet driver, a pair of oppositely disposed plates, one fast to each of said arms respectively, said plates being recessed to form entrances therebetween, and the adjacent faces of said plates each. being provided with grooves to receive the shzin s of two rivets, said plates being bevelled at the upper ends of said grooves and adapted to support the heads of said rivets, the distance between the plates intermediate said grooves being less than the distance between the plates outside said grooves at the entrances to said holder, the adjacent faces of said plates being also provided with upwardly inclined grooves extending from said shank receiving grooves through the entrances to said holder and forming guideways for the heads of the rivets as they passthrough said'entrances and into the shank receiving grooves.

10, A riveting machine having, in combination, a rivet driver, a rivet holder slidably mounted on said driver and provided with entrances and with vertical grooves therein to receive the shanks of two rivets, a pair of raceways terminating at their lower ends on opposite sides of said holder respectively,

said holder being provided in said entrances with upwardly inclined grooves extending from said shank receiving grooves to said raceways and forming guideways for the heads of rivets as theypass from said raceways through said entrances and into said shank-receiving grooves. f

11. A riveting machine having, in combi nation, a slide, a rivet driver fast thereto and embodying a pair of driver stems, a rivet holder slidably mounted on said driver and provided with entrances and with vertical grooves therein to receive the shanks of two rivets, a pair of raceways ter inating at their lower ends on opposite sides of said holder respectively, said holder being provided in said entrances with upwardly inclined grooves extending from said shank receiving grooves to said raceways and forming guideways for the heads of rivets as they pass from said raceways through said entrances and into said shank receiving grooves, a pair of anvils in alignment with said driver stems, and mechanism to impart a reciprocatory motion to said slide toward and away from said anvils.

' 12. A riveting machine having, in combination, a slide, a rivet driver fast thereto and embodying a pair of driver. stems, a rivet holder slidably mounted on said driver and provided with entrances and with vertical grooves therein to receive the shanks of two rivets, a pair of raceways terminating at their lower ends on opposite sides of said holderrespectively, said holder being pro vided in said entrances with upwardly inclined grooves extending from said shank receiving grooves to said raceways and formmg guideways for the heads of rivets as they pass from said raceways through said entrances and into said shank receiving grooves, I

a plate detachably fastened to the frame of said machine, a pair of anvils on said plate in alignment with said driver stem, and mechanism to impart a reciprocatory motion to said slide toward and away from said anvils.

13. A riveting machine having, in combination, a slide, a rivet driver fast thereto and embodying a pair of driver stems, a rivet holder slidably mounted on said driver and provided with entrances and with vertical grooves therein to receive the shanks of two rivets, a pair of raceways terminating at their lower ends onopposite sides of said holder respectively, said holder being provided in said entrances with upwardly inclined grooves extending from said shank receiving grooves to said raceways and forming guideways for the heads of rivets as they pass from said raceways through said entrances and into said shank receiving grooves,

a pair of anvils in alignment with said driver stems, and mechanism to impart a reciproeatory motion to sand slide towa-rd'and away from sald anvlls, said raceways constituting stops adapted to limit the distance to which said holder can be moved away from said anvils. I

In testimony whereof I have hereunto set my hand.

ARTHUR R. HAVENER. 

